UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-D

ASSET-BACKED ISSUER
DISTRIBUTION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF
THE SECURITIES EXCHANGE ACT OF 1934

For the monthly distribution period from
September 1, 2008 to September 30, 2008

Commission File Number of issuing entity: 333-147112-01

Capital Auto Receivables Asset Trust 2008-1
(Exact name of issuing entity as specified in its charter)

Commission File Number of depositor: 333-147112

Capital Auto Receivables LLC
(Exact name of depositor as specified in its charter)

GMAC LLC
(Exact name of sponsor as specified in its charter)


DELAWARE (State or other jurisdiction of incorporation or organization of the issuing entity)		26-6203084 (I.R.S. Employer Identification No.)


200 Renaissance Center, P.O. Box 200 Detroit, Michigan (Address of principal executive offices of the issuing entity)		48265-2000 (Zip Code)

(313) 556-5000
(Telephone number, including area code)

Registered / reporting pursuant to (Check One)


Title of Class	Section 12(b)	Section 12(g)	Section 15(d)	Name of Exchange
				(If Section 12(b))

Class A-2a			X
Class A-2b			X
Class A-3a			X
Class A-3b			X
Class A-4a			X
Class A-4b			X

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes X No

TABLE OF CONTENTS


	PART I — DISTRIBUTION INFORMATION
	Item 1. Distribution and Pool Performance Information
	PART II — OTHER INFORMATION
	Item 2. Legal Proceedings
	Item 3. Sales of Securities and Use of Proceeds
	Item 4. Defaults Upon Senior Securities
	Item 5. Submission of Matters to a Vote of Security Holders
	Item 6. Significant Obligors of Pool Assets
	Item 7. Significant Enhancement Provider Information
	Item 8. Other Information
	Item 9. Exhibits
Signature
EXHIBIT INDEX
EX-99 Monthly Servicing Report for the Period from September 1, 2008 to September 30, 2008

PART I — DISTRIBUTION INFORMATION

Item 1. Distribution and Pool Performance Information

Distribution and pool performance information of the asset pool of the issuing entity is set forth in the attached monthly servicing report.

PART II — OTHER INFORMATION

Item 2. Legal Proceedings

None.

Item 3. Sales of Securities and Use of Proceeds

None.

Item 4. Defaults Upon Senior Securities

None.

Item 5. Submission of Matters to a Vote of Security Holders

None.

Item 6. Significant Obligors of Pool Assets

None.

Item 7. Significant Enhancement Provider Information

None.

Item 8. Other Information

None.

Item 9. Exhibits


EXHIBIT NO.		DESCRIPTION

99		Monthly Servicing Report for the Period from September 1, 2008 to September 30, 2008

Signature

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.


	Capital Auto Receivables Asset Trust 2008-1 (Issuing Entity) by: GMAC LLC (Servicer, not in its individual capacity but solely as Servicer on behalf of the Issuing Entity)



	/s/ David J. DeBrunner
	David J. DeBrunner, Vice President, Controller and Chief Accounting Officer

Date: October 24, 2008

EXHIBIT INDEX


EXHIBIT NUMBER		DESCRIPTION

99		Monthly Servicing Report for the Period from September 1, 2008 to September 30, 2008

Table of Contents

Table of Contents

Table of Contents

Table of Contents

CAPITAL AUTO RECEIVABLES ASSET TRUST 2008-1 10-D